Challenge: Existing approaches to evaluate open domain dialogues have a one-to-many problem . existing approaches lack commonsense reasoning biases and perform poorly in domain-specific scenarios.
Approach: They propose a framework that leverages both a small, specialised model and LLMs for the evaluation of open-domain dialogues.
Outcome: The proposed framework achieves state-of-the-art performance in both classification and evaluation tasks and exhibits better correlation with human judgements.

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Challenge: Existing evaluation metrics struggle to evaluate adversarial negative examples . existing metrics struggle in handling adversarials, resulting in low correlations with human judgments.
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GlotEval: A Test Suite for Massively Multilingual Evaluation of Large Language Models (2025.emnlp-demos)

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Challenge: Existing evaluation frameworks focus on English and a handful of high-resource languages, thereby overlooking the realistic performance of large language models in multilingual and lower-resourced scenarios.
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Evaluating the Performance of Large Language Models via Debates (2025.findings-naacl)

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Challenge: Large Language Models (LLMs) are evolving and impacting various fields . current methods for evaluation are based on fixed, domain-specific questions or rely on human input, making them unscalable.
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Challenge: Existing LLMs suffer from biases and misalignment due to limited functional understanding and knowledge gaps.
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Soda-Eval: Open-Domain Dialogue Evaluation in the age of LLMs (2024.findings-emnlp)

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Challenge: Current evaluation practices of open domain dialogue systems are still highly dependent on human evaluation.
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Challenge: a lack of comprehensive evaluations for SDMs in speech-to-speech (S2S) scenarios is a major challenge for end-to end spoken dialogue models.
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Leveraging Large Language Models for NLG Evaluation: Advances and Challenges (2024.emnlp-main)

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Challenge: introducing Large Language Models (LLMs) has opened new avenues for assessing generated content quality, e.g., coherence, creativity, and context relevance.
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Challenge: Currently, human evaluation is the most reliable way to holistically judge the quality of the dialogue.
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Challenge: DIALIGHT is a toolkit for developing and evaluating multilingual Task-Oriented Dialogue systems.
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DEnsity: Open-domain Dialogue Evaluation Metric using Density Estimation (2023.findings-acl)

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Challenge: Recent studies suggest that neural classifiers make overly confident predictions for examples from unseen distributions.
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